Hi Torsten,

Thanks for your response!

To answer your first question you can add the user to multiple groups using multiple O flags within your certificate. For example, if Bob is a part of web and middleware groups, you can use “/CN=bob/O=web-dev/O=middleware-dev”

For the second part of your question, Kubernetes does not have a way to revoke old certificates, and therefore you can use a bearer-token based authentication strategy for that and use the kubelet client cert rotation


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